28775313

素因数分解:

$3^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{691}}^1$

素因数の和:1365

約数の個数: 24

約数和(自身を含む): 47642816

約数和(自身を除く): 18867503

約数列:

[1, 3, 7, 9, 21, 63, 661, 691, 1983, 2073, 4627, 4837, 5949, 6219, 13881, 14511, 41643, 43533, 456751, 1370253, 3197257, 4110759, 9591771, 28775313]

約数ペア:

[(1, 28775313), (3, 9591771), (7, 4110759), (9, 3197257), (21, 1370253), (63, 456751), (661, 43533), (691, 41643), (1983, 14511), (2073, 13881), (4627, 6219), (4837, 5949)]